[PATCH 07/36] drm/amd/display: add plane driver-specific properties for degamma LUT
Harry Wentland
harry.wentland at amd.com
Thu Jun 1 19:24:22 UTC 2023
On 5/23/23 18:14, Melissa Wen wrote:
> Create and attach driver-private properties for plane color management.
> First add plane degamma LUT properties that means user-blob and its
> size. We will add more plane color properties in the next commits. In
> addition, we keep these driver-private plane properties limited by
> defining AMD_PRIVATE_COLOR.
>
> Co-developed-by: Joshua Ashton <joshua at froggi.es>
> Signed-off-by: Joshua Ashton <joshua at froggi.es>
> Signed-off-by: Melissa Wen <mwen at igalia.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 14 ++++
> drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 8 ++
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 9 +++
> .../amd/display/amdgpu_dm/amdgpu_dm_plane.c | 77 +++++++++++++++++++
> 4 files changed, 108 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> index 88af075e6c18..fa67c84f5994 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> @@ -1275,6 +1275,20 @@ amdgpu_display_create_color_properties(struct amdgpu_device *adev)
> return -ENOMEM;
> adev->mode_info.regamma_tf_property = prop;
>
> + prop = drm_property_create(adev_to_drm(adev),
> + DRM_MODE_PROP_BLOB,
> + "AMD_PLANE_DEGAMMA_LUT", 0);
> + if (!prop)
> + return -ENOMEM;
> + adev->mode_info.plane_degamma_lut_property = prop;
> +
> + prop = drm_property_create_range(adev_to_drm(adev),
> + DRM_MODE_PROP_IMMUTABLE,
> + "AMD_PLANE_DEGAMMA_LUT_SIZE", 0, UINT_MAX);
> + if (!prop)
> + return -ENOMEM;
> + adev->mode_info.plane_degamma_lut_size_property = prop;
> +
Same as with previous patch and the following ones... Would be
great to have this sit in amdgpu_dm_color.c.
Harry
> return 0;
> }
> #endif
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> index 881446c51b36..6c165ad9bdf0 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
> @@ -352,6 +352,14 @@ struct amdgpu_mode_info {
> * drm_transfer_function`.
> */
> struct drm_property *regamma_tf_property;
> + /* @plane_degamma_lut_property: Plane property to set a degamma LUT to
> + * convert color space before blending.
> + */
> + struct drm_property *plane_degamma_lut_property;
> + /* @plane_degamma_lut_size_property: Plane property to define the max
> + * size of degamma LUT as supported by the driver (read-only).
> + */
> + struct drm_property *plane_degamma_lut_size_property;
> };
>
> #define AMDGPU_MAX_BL_LEVEL 0xFF
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> index ad5ee28b83dc..22e126654767 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> @@ -716,6 +716,15 @@ enum drm_transfer_function {
> struct dm_plane_state {
> struct drm_plane_state base;
> struct dc_plane_state *dc_state;
> +
> + /* Plane color mgmt */
> + /**
> + * @degamma_lut:
> + *
> + * LUT for converting plane pixel data before going into plane merger.
> + * The blob (if not NULL) is an array of &struct drm_color_lut.
> + */
> + struct drm_property_blob *degamma_lut;
> };
>
> struct dm_crtc_state {
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> index 322668973747..e9cedc4068f1 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
> @@ -1338,6 +1338,9 @@ dm_drm_plane_duplicate_state(struct drm_plane *plane)
> dc_plane_state_retain(dm_plane_state->dc_state);
> }
>
> + if (dm_plane_state->degamma_lut)
> + drm_property_blob_get(dm_plane_state->degamma_lut);
> +
> return &dm_plane_state->base;
> }
>
> @@ -1405,12 +1408,79 @@ static void dm_drm_plane_destroy_state(struct drm_plane *plane,
> {
> struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
>
> + if (dm_plane_state->degamma_lut)
> + drm_property_blob_put(dm_plane_state->degamma_lut);
> +
> if (dm_plane_state->dc_state)
> dc_plane_state_release(dm_plane_state->dc_state);
>
> drm_atomic_helper_plane_destroy_state(plane, state);
> }
>
> +#ifdef AMD_PRIVATE_COLOR
> +static void
> +dm_atomic_plane_attach_color_mgmt_properties(struct amdgpu_display_manager *dm,
> + struct drm_plane *plane)
> +{
> + if (dm->dc->caps.color.dpp.dgam_ram || dm->dc->caps.color.dpp.gamma_corr ) {
> + drm_object_attach_property(&plane->base,
> + dm->adev->mode_info.plane_degamma_lut_property, 0);
> + drm_object_attach_property(&plane->base,
> + dm->adev->mode_info.plane_degamma_lut_size_property,
> + MAX_COLOR_LUT_ENTRIES);
> + }
> +}
> +
> +static int
> +dm_atomic_plane_set_property(struct drm_plane *plane,
> + struct drm_plane_state *state,
> + struct drm_property *property,
> + uint64_t val)
> +{
> + struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
> + struct amdgpu_device *adev = drm_to_adev(plane->dev);
> + bool replaced = false;
> + int ret;
> +
> + if (property == adev->mode_info.plane_degamma_lut_property) {
> + ret = drm_property_replace_blob_from_id(plane->dev,
> + &dm_plane_state->degamma_lut,
> + val,
> + -1, sizeof(struct drm_color_lut),
> + &replaced);
> + dm_plane_state->base.color_mgmt_changed |= replaced;
> + return ret;
> + } else {
> + drm_dbg_atomic(plane->dev,
> + "[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
> + plane->base.id, plane->name,
> + property->base.id, property->name);
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int
> +dm_atomic_plane_get_property(struct drm_plane *plane,
> + const struct drm_plane_state *state,
> + struct drm_property *property,
> + uint64_t *val)
> +{
> + struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
> + struct amdgpu_device *adev = drm_to_adev(plane->dev);
> +
> + if (property == adev->mode_info.plane_degamma_lut_property) {
> + *val = (dm_plane_state->degamma_lut) ?
> + dm_plane_state->degamma_lut->base.id : 0;
> + } else {
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +#endif
> +
> static const struct drm_plane_funcs dm_plane_funcs = {
> .update_plane = drm_atomic_helper_update_plane,
> .disable_plane = drm_atomic_helper_disable_plane,
> @@ -1419,6 +1489,10 @@ static const struct drm_plane_funcs dm_plane_funcs = {
> .atomic_duplicate_state = dm_drm_plane_duplicate_state,
> .atomic_destroy_state = dm_drm_plane_destroy_state,
> .format_mod_supported = dm_plane_format_mod_supported,
> +#ifdef AMD_PRIVATE_COLOR
> + .atomic_set_property = dm_atomic_plane_set_property,
> + .atomic_get_property = dm_atomic_plane_get_property,
> +#endif
> };
>
> int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
> @@ -1489,6 +1563,9 @@ int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
>
> drm_plane_helper_add(plane, &dm_plane_helper_funcs);
>
> +#ifdef AMD_PRIVATE_COLOR
> + dm_atomic_plane_attach_color_mgmt_properties(dm, plane);
> +#endif
> /* Create (reset) the plane state */
> if (plane->funcs->reset)
> plane->funcs->reset(plane);
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